SG-A1-03-1 Equivalent & Substitute Parts

Part Overview

The SG-A1-03-1 is a non-locking interlock switch manufactured by Panasonic Industrial Automation Sales. This 3PST-NC circuit switch is designed for panel disconnect applications with cable lead termination and 1 meter cable length. The part operates across a voltage range of 125VAC and 30VDC with a current rating of 2.5A (AC/DC), meeting IP67 ingress protection standards for dust-tight and waterproof environments. The SG-A1-03-1 maintains active product status with full RoHS compliance and international certifications including CE, cULus, and TUV approval. Substitute parts are identified when equivalent functional performance, circuit configuration, and environmental ratings can be maintained within specified electrical and mechanical tolerances.

Substiute Parts

SG-A1-03-1

Panasonic Industrial Automation SalesIn Stock: 853SG-A1-03-1 Datasheet

Current PartRFQ

D4GS-N4T

Omron Automation and SafetyIn Stock: 899D4GS-N4T Datasheet

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D4GS-N4T-5

Omron Automation and SafetyIn Stock: 713D4GS-N4T-5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SG-A1-03-1 are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Circuit configuration: 3PST-NC (three pole, single throw, normally closed)
• Switch type: Non-locking interlock
• Actuator type: Panel disconnect
• Termination style: Cable leads
• Ingress protection: IP67 minimum
• Operating temperature range: Minimum -25°C to 70°C coverage

Allowable Variations:

• Current rating: Substitute parts may operate at lower current ratings if the application does not require the full 2.5A capacity
• Voltage rating: Substitute parts rated for 240VAC are acceptable for applications operating at or below 125VAC
• Cable length: Variants with different cable lengths (1m or 5m) are grouped as substitutes when all other parameters align
• Holding force: Additional mechanical specifications in substitute parts do not disqualify equivalence
• Compliance certifications: Substitute parts with equal or greater certification scope (CCC, CE, cULus, TUV) maintain compatibility

The D4GS-N series from Omron Automation and Safety meets all primary matching criteria with identical circuit configuration, switch type, actuator type, termination style, and ingress protection rating.

Parameter Comparison

Engineering Selection Recommendations

Both D4GS-N4T and D4GS-N4T-5 are qualified substitutes for the SG-A1-03-1 based on matching circuit configuration, switch type, actuator design, and environmental protection ratings. All three parts maintain active product status with international compliance certifications.

D4GS-N4T Selection Criteria: The D4GS-N4T provides 1 meter cable length matching the original SG-A1-03-1 configuration. This variant is suitable for applications where cable routing and panel layout requirements align with the standard 1m length. The part carries CCC, CE, cULus, and TUV certifications with RoHS3 compliance.

D4GS-N4T-5 Selection Criteria: The D4GS-N4T-5 extends cable length to 5 meters, accommodating installations requiring greater distance between the switch actuator and control panel connection points. This variant maintains identical electrical specifications and certifications as the D4GS-N4T, with RoHS compliance. Cable length selection depends on physical installation geometry and wiring layout requirements.

Current Rating Consideration: The D4GS-N series operates at 750mA (AC), which is lower than the SG-A1-03-1 rating of 2.5A (AC/DC). Substitution is valid only when the application current demand does not exceed 750mA. Applications requiring the full 2.5A capacity must retain the original SG-A1-03-1 specification.

Voltage Rating Consideration: The D4GS-N series is rated for 240VAC, which exceeds the SG-A1-03-1 maximum of 125VAC. This higher voltage rating provides compatibility margin for applications operating at or below 125VAC. The SG-A1-03-1 30VDC rating is not matched by the D4GS-N series, which operates on AC only.

Frequently Asked Questions (FAQ)

Q: Can D4GS-N4T or D4GS-N4T-5 replace SG-A1-03-1 in all applications?

A: Substitution is valid only when application current requirements do not exceed 750mA and voltage supply is AC only. Applications requiring DC operation or current levels above 750mA must use the original SG-A1-03-1.

Q: What is the difference between D4GS-N4T and D4GS-N4T-5?

A: Both parts are electrically identical with matching circuit configuration, current rating, voltage rating, and certifications. The primary difference is cable length: D4GS-N4T provides 1 meter, while D4GS-N4T-5 provides 5 meters. Selection depends on physical installation requirements.

Q: Are all three parts RoHS compliant?

A: Yes. The SG-A1-03-1 is RoHS Compliant. The D4GS-N4T is RoHS3 Compliant. The D4GS-N4T-5 is RoHS Compliant. All three parts meet RoHS requirements.

Q: Do the substitute parts have the same certifications as SG-A1-03-1?

A: The SG-A1-03-1 carries CE, cULus, and TUV certifications. The D4GS-N4T and D4GS-N4T-5 carry CCC, CE, cULus, and TUV certifications, providing equal or greater certification scope.

Q: What is the operating temperature range for substitute parts?

A: The D4GS-N4T and D4GS-N4T-5 operate from -30°C to 70°C, which exceeds the SG-A1-03-1 range of -25°C to 70°C. Both substitutes are suitable for applications within the original temperature specification.

Q: Can substitute parts be used in DC applications?

A: No. The D4GS-N series is rated for AC operation only. The SG-A1-03-1 supports both AC and DC operation. Applications requiring DC voltage must use the original SG-A1-03-1.